10. Insert 3 geometric means between 4 and 324? a.) 12, 36, 108 b. +12, -36, +108 C. +12, 136, +108 d. +12, 36, +108 11. What is the sum of the geometric series 18 + 6 + 2+...? a. 24 b. 26 C. 27 d. 285. What is the first term of the arithmetic sequence if da3 - 391 and its common difference is 12? (a. 7 b. 8 9. C. 9 d. 10 6. Insert 3 arithmetic means between -17 and -61 a. -28, -39, -49 b. -28, -39, -50 C. -28, -39, -51 d. -28, -40, -50 7. What is the sum of the first 25 terms of the arithmetic sequence series 12 + 8 + 4+ ... a. -72 b. -450 C. -900 d. -1800 8. What is the next term of the geometric sequence -7, -14, 28, a. 56 b. -56 check c. 54 d. -54 9. What is the value of the 9th term of a geometric sequence if a, = -2 and r =-2 a. -512 b. 512 C. -1024 d. 1024 78Chapter Test Directions: Read the following statement and write the letter of the correct answer on the space provided before each item number. Write E if the answer is not among the choices. 1. Which of the following is the general rule of the sequence 4, 7, E 10, 13, ...? a. an = 4+n either of. b. an = 3n + 1 C. an = 2n +2 d. an = 3+n 2. Which of the following is the summation notation of the series 3 + 5 +7 + ... + 23? C. a. En=10 (2n + 1) b. Er En=8 3. Which of the following sequences is an arithmetic sequence? a. 13, 17, 21, 25, 28 during siff to arrat be b. -9, -15, -21, -27, -33, -38 C. 2, 4, 8, 16, 32 d. - 1, 3, 2 2' 4. What is the 37th term of the arithmetic sequence where a, = 15 and d = 13? ITT a. 1332 ans : 483 b. 1334 C. 1347 d. 1360